11-16-2012
• arclein
n 2009, Michael Mumma of NASA’s Goddard Space Flight Center in Greenbelt, Maryland used an Earth-based telescope and found hotspots of methane that appeared seasonally. Methane is quickly destroyed by ultraviolet radiation in the Martian atmosphere, usually after only a few hundred years, so the gas could not be left over from some era millions of years ago. The detection excited much of the scientific